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Experimental investigation of the nasa common research model
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dittberner, Ashley Rivers, Melissa B. |
| Copyright Year | 2010 |
| Description | An experimental aerodynamic investigation of the NASA Common Research Model has been conducted in the NASA NTF (National Transonic Facility). Data have been obtained at chord Reynolds numbers of 5, 19.8 and 30 million for the WB and WBT0 configurations. Data have also been obtained at a chord Reynolds number of 5 million for the WBNP, WBT+2 and WBT-2 configurations. Force and moment, surface pressure and surface flow visualization data were obtained but only the force and moment data are presented herein. Model deformation measurements, aeroelastic, nacelle/pylon Reynolds number and tail effects have been assessed. The model deformation measurements showed more twist as you go out the wing span, with a break in the high q(sub infinity) data close to CL = 0.6 which is consistent with separation near the tip. Increases in dynamic pressure give an increase in pitching moment and drag and a decrease in lift for the WB and WBT0 configuration at Mach = 0.7, 0.85 and 0.87. The addition of a nacelle/pylon gave an increase in drag, decrease in lift and a less nose down pitching moment around the design lift condition of 0.5. Increases in chord Reynolds number have been found to follow the normal Reynolds number trends except at the 19.8 million low q(sub infinity) cases. The abnormality of the 19.8 million low q(sub infinity) cases is being investigated. The tail effects also follow the expected trends. All of the data shown fall within the 2-sigma limits for repeatability. |
| File Size | 7564687 |
| Page Count | 35 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20100025544 |
| Archival Resource Key | ark:/13960/t73v4jx2g |
| Language | English |
| Publisher Date | 2010-06-28 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Aerodynamic Drag Pitching Moments Computational Fluid Dynamics Transport Aircraft Transonic Wind Tunnels Reynolds Number Transonic Speed Nacelles Pylons Aircraft Models Body-wing and Tail Configurations Wind Tunnel Tests Flow Visualization Wing Span Aeroelasticity Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
